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Allow forcing legacy DRM interface

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This commit is contained in:
Scott Anderson 2017-09-23 13:20:17 +12:00
parent 1682c0d983
commit 4a53aab466
1 changed files with 4 additions and 1 deletions
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5
backend/drm/drm.c
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@ -31,7 +31,10 @@ bool wlr_drm_check_features(struct wlr_drm_backend *backend) {
return false; return false;
} }
if (drmSetClientCap(backend->fd, DRM_CLIENT_CAP_ATOMIC, 1)) { if (getenv("WLR_DRM_NO_ATOMIC")) {
wlr_log(L_DEBUG, "WLR_DRM_NO_ATOMIC set, forcing legacy DRM interface");
backend->iface = &legacy_iface;
} else if (drmSetClientCap(backend->fd, DRM_CLIENT_CAP_ATOMIC, 1)) {
wlr_log(L_DEBUG, "Atomic modesetting unsupported, using legacy DRM interface"); wlr_log(L_DEBUG, "Atomic modesetting unsupported, using legacy DRM interface");
backend->iface = &legacy_iface; backend->iface = &legacy_iface;
} else { } else {